Optical instrument



FIG. 1 is a left side elevational view of an embodiment of an optical instrument according to the invention.

FIG. 2 is a right side elevational view of the embodiment.

FIG. 3 is a perspective view from the left side of the embodiment.

FIG. 4 is a perspective view from the right side of the embodiment.

FIG. 5 is a top plan view of the embodiment.

FIG. 6 is a front elevational view of the embodiment; and,

FIG. 7 is a rear elevational view of the embodiment.

In the above drawings, any wording or numerals shown therein does not form a part of the invention. Furthermore, any views not shown do not form a part of the invention. 

The ornamental design for an optical instrument, as shown and described. 